Finding the Fourth Proportional to 1,250.66, 1,726.61 and 831.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.66 : 1,726.61 = 831.59 : x
2. Step 2: Convert to fraction form
   1,250.66/1,726.61 = 831.59/x
3. Step 3: Cross multiply
   1,250.66x = 1,726.61 × 831.59
4. Step 4: Simplify right side
   1,250.66x = 1,435,831.53
5. Step 5: Solve for x
   x = 1,435,831.53/1,250.66
6. Step 6: Final answer
   x = 1,148.06